Nonlinearity optimization in FSO transport system and generation of 24-GHz MW signal based on OADM scheme and external modulation technique

OPTICAL AND QUANTUM ELECTRONICS(2021)

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摘要
Nonlinearity optimization in free space optics (FSO) transport system and the generation of 24-GHz Microwave signal based on optical add drop multiplexing scheme and external modulation technique is proposed and experimentally demonstrated. 10 Gbps/24-GHz MW signal is transmitted over 100-km (50-km+50-km) single mode fiber (SMF) distance and wirelessly communicated over 20-m by employing horn antenna, and 10 Gbps base band signal is transmitted over 100-km SMF and 10-m FSO link with the assistance of parabolic reflector, push pull amplifier (PPA) and adaptive filter (AF). The nonlinear distortion and the power loss over the FSO transmission is reduced by employing PPA and AF at the receiving end of the FSO link. Excellent bit error rate ( 10^-9 ), expectable eye diagram (eye height- 1.15 × 10 −5 au for baseband and 1.32 × 10 −5 au for 24-GHz MW) are achieved in our proposed architecture. Our presented system performed as a potential candidate for multiservice wireless network in the communication world.
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关键词
Microwave-over-fiber, Free space optics, Optical add drop multiplexing technique
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